None, impossible
A substance made of two or more elements that have been chemically joined is called a compound.
short for labratory
lab
at the SEISMOLOGICAL LABRATORY in Pasadena
compound
A labratory is a building where scientific research is conducted. A labratory tech is someone who works in a lab doing research.
cinnabar island at the labratory
at the SEISMOLOGICAL LABRATORY in Pasadena
Manmade elements. These have traditionally been considered to be: Technetium, Promethium, Neptunium, and all elements beyond Neptunium. However trace levels of several of these have since then been detected naturally.
A substance made of two or more elements that have been chemically combined is called a compound. In a compound, the elements are chemically bonded together in fixed ratios to form a new substance with unique properties different from the individual elements.
It is a Compound.
The answer is compound.